公开(公告)号：US20230219693A1

公开(公告)日：2023-07-13

申请号：US18152920

申请日：2023-01-11

Applicant: Raytheon Technologies Corporation

Inventor： Stephen A. Witalis ,  Ramesh Rajagopalan ,  Manuj Dhingra

IPC: B64D31/06 ,  B64D27/10 ,  F02C6/00 ,  F02C7/26 ,  B64D27/24

CPC classification number: B64D31/06 ,  B64D27/10 ,  F02C6/00 ,  F02C7/26 ,  B64D27/24 ,  F05D2260/85 ,  B64D2027/026

Abstract: An engine system for an aircraft includes a gas turbine engine and a control system. The control system is configured to motor the gas turbine engine, absent fuel burn, during a taxi mode of the aircraft. The control system is further configured to accelerate a motoring speed of the gas turbine engine, absent fuel burn, above an idle speed of the gas turbine engine to provide propulsion during the taxi mode. The control system is configured to decrease the motoring speed of the gas turbine engine, absent fuel burn, based on a change in a starting mode of the gas turbine engine or the aircraft reaching a targeted new position.

公开(公告)号：US20230160347A1

公开(公告)日：2023-05-25

申请号：US18153487

申请日：2023-01-12

Applicant: Raytheon Technologies Corporation

Inventor： Timothy J. Crowley ,  Sorin Bengea ,  Manuj Dhingra ,  David Gelwan ,  Kevin Hendricks ,  Joshua Adams ,  Martin Richard Amari ,  Richard P. Meisner ,  David Lei Ma

IPC: F02C9/00 ,  B64D27/02

CPC classification number: F02C9/00 ,  B64D27/02 ,  B64D2027/026 ,  F05D2220/76 ,  F05D2220/323 ,  F05D2240/60 ,  F05D2260/80 ,  F05D2270/09 ,  F05D2270/20 ,  F05D2270/44 ,  F05D2270/80

Abstract: A hybrid electric propulsion system includes a gas turbine engine having at least one compressor section and at least one turbine section operably coupled to a shaft. The hybrid electric propulsion system includes an electric motor configured to augment rotational power of the shaft of the gas turbine engine. A controller is operable to determine hybrid electric propulsion system parameters based on a composite system model and sensor data, determine a prediction based on the hybrid electric propulsion system parameters and the composite system model, determine a model predictive control optimization for a plurality of hybrid electric system control effectors based on the prediction using a plurality of reduced-order partitions of the composite system model, and actuate the hybrid electric system control effectors based on the model predictive control optimization.